Loos, Zack
Current rating: 1470
Record: 4-6
| Grand Prix Portland 2017 (XLN standard) | starting rating: 1504 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 611 | Chen, Daniel (1546) | Won 2-1 | +191523 |
| 2standard | 368 | Huiras, William (1626) | Lost 0-2 | -161507 |
| 3standard | 537 | McConnell, Devin (1502) | Lost 0-2 | -181489 |
| 4standard | 573 | Uhrich, Theodore (1479) | Lost 0-2 | -191470 |
| average opponent: 1538record: 1-3 | new rating: 1470 | |||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 390 | Meadows, Zachary (1488) | Won 2-0 | +181518 |
| 2sealed | 246 | Montoya, Brandon 2 (1517) | Lost 0-2 | -181500 |
| 3sealed | 357 | Hook, Ian (1501) | Won 2-0 | +181518 |
| 4sealed | 239 | Stark, Graham (1570) | Lost 0-2 | -171501 |
| 5sealed | 343 | Van Zee, Will (1497) | Won 2-1 | +181519 |
| 6sealed | 222 | Kwong, Winston (1706) | Lost 1-2 | -151504 |
| average opponent: 1547record: 3-3 | new rating: 1504 | |||